drm/i915: overlay: extract some duplicated code

I've suspected some bug there wrt to suspend, but that was not
the case. Clean up the code anyway.

Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Eric Anholt <eric@anholt.net>
This commit is contained in:
Daniel Vetter 2037-04-25 10:08:26 +02:00 • committed by Eric Anholt
commit 12ca45fea9